update from main archive 961214cvs/libc-961215

Sun Dec 15 01:53:20 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (subdirs): Change crypt to md5-crypt.
	* crypt/Makefile, crypt/md5-crypt.c, crypt/md5.c, crypt/md5.h,
	crypt/md5c-test.c, crypt/md5test.c: Move to new directory
	md5-crypt.
	* sysdeps/unix/sysv/linux/configure.in: Refer to linuxthreads and
	crypt instead of LinuxThreads and des-crypt.

	* Makefile (subdirs): Add nss back.
	* sysdeps/unix/inet/Subdirs: Move nis to end of file to fulfill
	dependencies.

	* libio/iofclose.c: Implement fclose(NULL) as closing all streams.
	* stdio-common/Makefile (routines): Add fcloseall.
	* stdio-common/fcloseall.c: New file.
	* sysdeps/generic/abort.c: Make implementation POSIX.1 compatible.

	* sysdeps/mach/libc-lock.h: Add definition of __libc_lock_trylock.
	* sysdeps/stub/libc-lock.h: Define __libc_lock_trylock to always
	return 0.

	* stdio-common/printf.h: Define MIN and MAX only if not already
	defined.

	* stdio-common/vfprintf.c: Set errno to EBADF if stream does not
	allow writing.  Required by POSIX.1.

	* libio/libioP.h (CHECK_FILE): Use MAYBE_SET_EINVAL instead of
	assignment.

	* interp.c: Update copyright.
	* libio/clearerr.c: Likewise.
	* libio/ioseekoff.c: Likewise.
	* libio/ioseekpos.c: Likewise.
	* stdio/fclose.c: Likewise.
	* stdio/fflus.c: Likewise.

	* libio/libio.h [!_IO_MTSAFE_IO]: Define _IO_cleanup_region_start
	and _IO_cleanup_region_end as empty.
	* libio/fgetc.c: Use _IO_cleanup_region_start and
	_IO_cleanup_region_end instead of __libc_cleanup_region_start and
	__libc_cleanup_region_end.
	* libio/fputc.c: Likewise.
	* libio/freopen.c: Likewise.
	* libio/fseek.c: Likewise.
	* libio/getc.c: Likewise.
	* libio/getchar.c: Likewise.
	* libio/iofclose.c: Likewise.
	* libio/iofflush.c: Likewise.
	* libio/iofgetpos.c: Likewise.
	* libio/iofgets.c: Likewise.
	* libio/iofputs.c: Likewise.
	* libio/iofread.c: Likewise.
	* libio/iofsetpos.c: Likewise.
	* libio/ioftell.c: Likewise.
	* libio/iofwrite.c: Likewise.
	* libio/iogetdelim.c: Likewise.
	* libio/iogets.c: Likewise.
	* libio/ioputs.c: Likewise.
	* libio/iosetbuffer.c: Likewise.
	* libio/iosetvbuf.c: Likewise.
	* libio/ioungetc.c: Likewise.

	* libio/iovspintf.c: Use cleanup handler to make sure no dangling
	locks can stay over.
	* libio/iovsscanf.c: Likewise.

	* libio/genops.c: Use _IO_lock_init_recursive and _IO_lock_fini
	instead of __libc_lock_init_recursive and __libc_lock_fini.

	* libio/filedoalloc.c: Only use __isatty when compiling GNU libc.
	Otherwise use isatty.
	* libio/fileops.c: Likewise for __open and open.

	* login/utmp_file.c (getutent_r_file): Use fcntl instead of
	flock.

	* nis/ypclnt.h: Add more casts to prevent warnings.

	* nss/Makefile (services): Remove dns.
	(libnss_dns, libnss_dns-inhibit-o): Remove definition.
	($(objpfx)libnss_dns.so): Removed.
	* nss/nss_dns/dns-host.c, nss/nss_dns/dns-network.c: Moved to...
	* resolv/nss_dns: ...here.
	* resolv/Makefile (extra-libs): Add libnss_dns.
	(libnss_dns-routines, libnss_dns-inhibit-o): Define as in
	nss/Makefile.

	* nss/XXX-lookup.c: Call __nss_database_lookup with new argument
	specifying alternate name for entry in /etc/nsswitch.conf
	* nss/nsswitch.c: If no entry with primary name is found in
	/etc/nsswitch.conf try alternate name if given.
	* nss/nsswitch.h: Add new parameter in prototype for
	__nss_database_lookup.
	* nss/spwd-lookup.c: Provide alternative entry name to look for.
	This makes our NSS compatible with Solaris' nsswitch.conf files.

	* string/tst-strlen.c: Change all counting variables to type size_t
	to prevent warnings.

	* sysdeps/posix/fpathconf.c: Update copyright.
	* sysdeps/posix/pathconf.c: Don't call fpathconf to do the work.
	Opening the file at this path may fail if it is a FIFO or pipe.

	These changes make the time implementation POSIX.1 compliant.
	* time/localtime.c (__localtime_r): Always call __tzset not only
	if __tzset_run is zero.
	* time/strftime.c: Add definition of memset_space to help to
	reduce for systems which have memset.
	(strftime): Don't use tm_zone member of argument for zone name.
	Instead always use tzname[].
	Call tzset() as required by POSIX.1 before any action.
	* time/tzset.c (tzset): Set tzname[] as required by POSIX.1.
	Remove global variable __tzset_run.  __tzset is now called always
	when a dependent function is used.
	(__tzset): Caching happens based on the contents of the
	environment variable TZ.

Fri Dec 13 01:06:52 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/paths.h: Add _PATH_KLOG.

Thu Dec 12 09:16:35 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rellns-sh: Correctly handle a relative source file name.

Wed Dec 11 19:18:40 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* login/utmp_file.c (setutent_file): Seek back to beginning of the
	file if resetting.

Thu Dec 12 16:39:12 1996  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* hurd/hurdinit.c (map0): Delete function.  Don't do this on
	_hurd_preinit_hook.
	* hurd/hurdstartup.c (_hurd_startup): Map page zero redzone here.

32 files changed, 123 insertions, 87 deletions

diff --git a/libio/clearerr.c b/libio/clearerr.c
index 9dfdb11530..7c7fb93dc0 100644
--- a/libio/clearerr.c
+++ b/libio/clearerr.c
@@ -1,20 +1,20 @@
 /* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   This file is part of the GNU C Library.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 #include "libioP.h"
 #include "stdio.h"
diff --git a/libio/fgetc.c b/libio/fgetc.c
index a754c4b78b..25bfed5596 100644
--- a/libio/fgetc.c
+++ b/libio/fgetc.c
@@ -31,9 +31,9 @@ fgetc (fp)
 {
   int result;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_getc_unlocked (fp);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
diff --git a/libio/filedoalloc.c b/libio/filedoalloc.c
index f36bfb3e32..836c56b63b 100644
--- a/libio/filedoalloc.c
+++ b/libio/filedoalloc.c
@@ -49,9 +49,12 @@ the executable file might be covered by the GNU General Public License. */
 #include <sys/stat.h>
 #ifdef __STDC__
 #include <stdlib.h>
+#include <unistd.h>
 #endif
+
 #ifdef _LIBC
-# include <unistd.h>
+# undef isatty
+# define isatty(Fd) __isatty (Fd)
 #endif
 
 /*
@@ -100,7 +103,7 @@ DEFUN(_IO_file_doallocate, (fp),
     }
   ALLOC_BUF(p, size, EOF);
   _IO_setb(fp, p, p+size, 1);
-  if (couldbetty && __isatty (fp->_fileno))
+  if (couldbetty && isatty(fp->_fileno))
     fp->_flags |= _IO_LINE_BUF;
   return 1;
 }
diff --git a/libio/fileops.c b/libio/fileops.c
index 3294befbd2..dd1f573400 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -37,6 +37,11 @@ the executable file might be covered by the GNU General Public License. */
 extern int errno;
 #endif
 
+
+#ifdef _LIBC
+# define open(Name, Flags, Prot) __open ((Name), (Flags), (Prot))
+#endif
+
 /* An fstream can be in at most one of put mode, get mode, or putback mode.
    Putback mode is a variant of get mode.
 
@@ -177,7 +182,7 @@ DEFUN(_IO_file_fopen, (fp, filename, mode),
     omode = O_RDWR;
     read_write &= _IO_IS_APPENDING;
   }
-  fdesc = __open (filename, omode|oflags, oprot);
+  fdesc = open(filename, omode|oflags, oprot);
   if (fdesc < 0)
     return NULL;
   fp->_fileno = fdesc;
@@ -223,7 +228,7 @@ DEFUN(_IO_file_setbuf, (fp, p, len),
 }
 
 /* Write TO_DO bytes from DATA to FP.
-   Then mark FP has having empty buffers. */
+   Then mark FP as having empty buffers. */
 
 int
 DEFUN(_IO_do_write, (fp, data, to_do),
@@ -548,6 +553,10 @@ DEFUN(_IO_file_read, (fp, buf, size),
     {
       _IO_ssize_t count = _IO_read(fp->_fileno, buf, size);
 #if 0 && defined EINTR
+      /* We must not do this optimization since POSIX.1 explicitly
+	 requests that the stream operations must return with the
+	 error EINTR if this happens.  There must be the possibility
+	 that stream operations time out.  --drepper  */
       if (count == -1 && errno == EINTR)
 	continue;
 #endif
@@ -587,6 +596,10 @@ DEFUN(_IO_file_write, (f, data, n),
       if (count == EOF)
 	{
 #if 0 && defined EINTR
+	  /* We must not do this optimization since POSIX.1 explicitly
+	     requests that the stream operations must return with the
+	     error EINTR if this happens.  There must be the
+	     possibility that stream operations time out.  --drepper  */
 	  if (errno == EINTR)
 	    continue;
 	  else
diff --git a/libio/fputc.c b/libio/fputc.c
index 865ac8cde0..89359dc46d 100644
--- a/libio/fputc.c
+++ b/libio/fputc.c
@@ -32,10 +32,10 @@ fputc (c, fp)
 {
   int result;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_putc_unlocked (c, fp);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
 
diff --git a/libio/freopen.c b/libio/freopen.c
index 0b782dd770..bb0c59788f 100644
--- a/libio/freopen.c
+++ b/libio/freopen.c
@@ -35,9 +35,9 @@ freopen (filename, mode, fp)
   CHECK_FILE (fp, NULL);
   if (!(fp->_flags & _IO_IS_FILEBUF))
     return NULL;
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_freopen (filename, mode, fp);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
diff --git a/libio/fseek.c b/libio/fseek.c
index 61f2e9205e..3d4e4925b9 100644
--- a/libio/fseek.c
+++ b/libio/fseek.c
@@ -33,9 +33,9 @@ fseek (fp, offset, whence)
 {
   int result;
   CHECK_FILE (fp, -1);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_fseek (fp, offset, whence);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
diff --git a/libio/genops.c b/libio/genops.c
index 52b8fc312a..7679445c2b 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -466,7 +466,7 @@ DEFUN(_IO_init, (fp, flags),
   fp->_markers = NULL;
   fp->_cur_column = 0;
 #ifdef _IO_MTSAFE_IO
-  __libc_lock_init_recursive (*fp->_lock);
+  _IO_lock_init_recursive (*fp->_lock);
 #endif
 }
 
@@ -501,7 +501,7 @@ DEFUN(_IO_default_finish, (fp),
     }
 
 #ifdef _IO_MTSAFE_IO
-  __libc_lock_fini (*fp->_lock);
+  _IO_lock_fini (*fp->_lock);
 #endif
 
   _IO_un_link(fp);
diff --git a/libio/getc.c b/libio/getc.c
index 0c0b6b84d3..eede63984f 100644
--- a/libio/getc.c
+++ b/libio/getc.c
@@ -33,10 +33,10 @@ _IO_getc (fp)
 {
   int result;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_getc_unlocked (fp);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
 #undef getc
diff --git a/libio/getchar.c b/libio/getchar.c
index d54ec58c1e..aa675591ad 100644
--- a/libio/getchar.c
+++ b/libio/getchar.c
@@ -31,11 +31,10 @@ int
 getchar ()
 {
   int result;
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile,
-			       stdin);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, stdin);
   _IO_flockfile (stdin);
   result = _IO_getc_unlocked (stdin);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
 
diff --git a/libio/iofclose.c b/libio/iofclose.c
index 77c7b50088..79a0543471 100644
--- a/libio/iofclose.c
+++ b/libio/iofclose.c
@@ -33,21 +33,31 @@ _IO_fclose (fp)
 {
   int status;
 
-  CHECK_FILE(fp, EOF);
-
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
-  _IO_flockfile (fp);
-  if (fp->_IO_file_flags & _IO_IS_FILEBUF)
-    status = _IO_file_close_it (fp);
+  if (fp == NULL)
+    {
+      /* Close all streams.  */
+      _IO_cleanup ();
+      status = 0;
+    }
   else
-    status = fp->_flags & _IO_ERR_SEEN ? -1 : 0;
-  _IO_FINISH (fp);
-  __libc_cleanup_region_end (1);
-  if (fp != _IO_stdin && fp != _IO_stdout && fp != _IO_stderr)
     {
-      fp->_IO_file_flags = 0;
-      free(fp);
+      CHECK_FILE(fp, EOF);
+
+      _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+      _IO_flockfile (fp);
+      if (fp->_IO_file_flags & _IO_IS_FILEBUF)
+	status = _IO_file_close_it (fp);
+      else
+	status = fp->_flags & _IO_ERR_SEEN ? -1 : 0;
+      _IO_FINISH (fp);
+      _IO_cleanup_region_end (1);
+      if (fp != _IO_stdin && fp != _IO_stdout && fp != _IO_stderr)
+	{
+	  fp->_IO_file_flags = 0;
+	  free(fp);
+	}
     }
+
   return status;
 }
 
diff --git a/libio/iofflush.c b/libio/iofflush.c
index 385c9629eb..af69486164 100644
--- a/libio/iofflush.c
+++ b/libio/iofflush.c
@@ -35,11 +35,10 @@ _IO_fflush (fp)
     {
       int result;
       CHECK_FILE (fp, EOF);
-      __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile,
-				   fp);
+      _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
       _IO_flockfile (fp);
       result = _IO_SYNC (fp) ? EOF : 0;
-      __libc_cleanup_region_end (1);
+      _IO_cleanup_region_end (1);
       return result;
     }
 }
diff --git a/libio/iofgetpos.c b/libio/iofgetpos.c
index 07128c16a3..cae5df7b39 100644
--- a/libio/iofgetpos.c
+++ b/libio/iofgetpos.c
@@ -33,10 +33,10 @@ _IO_fgetpos (fp, posp)
 {
   _IO_fpos_t pos;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   pos = _IO_seekoff (fp, 0, _IO_seek_cur, 0);
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   if (pos == _IO_pos_BAD)
     {
 #ifdef EIO
diff --git a/libio/iofgets.c b/libio/iofgets.c
index 79ba1a9cd6..7a1044f801 100644
--- a/libio/iofgets.c
+++ b/libio/iofgets.c
@@ -36,7 +36,7 @@ _IO_fgets (buf, n, fp)
   CHECK_FILE (fp, NULL);
   if (n <= 0)
     return NULL;
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   count = _IO_getline (fp, buf, n - 1, '\n', 1);
   if (count == 0 || (fp->_IO_file_flags & _IO_ERR_SEEN))
@@ -46,7 +46,7 @@ _IO_fgets (buf, n, fp)
       buf[count] = '\0';
       result = buf;
     }
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }
 
diff --git a/libio/iofputs.c b/libio/iofputs.c
index 6e94223a5c..9ce3caa194 100644
--- a/libio/iofputs.c
+++ b/libio/iofputs.c
@@ -33,13 +33,13 @@ _IO_fputs (str, fp)
   _IO_size_t len = strlen (str);
   int result;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   if (_IO_sputn (fp, str, len) != len)
     result = EOF;
   else
     result = 1;
-  __libc_cleanup_region_end (1);
+  _IO_cleanup_region_end (1);
   return result;
 }